Here's an undated one dollar token from Caesars Palace that I don't believe is cataloged in Janice's Nevada list. This one is from Jani Mint and is similar to O'Neal catalog numbers 41, 42, and 43. However, these seem to have the mintmark on the obverse, not below the chariot on the reverse as shown below. Any ideas?

Another interesting note is that the reverse does not say One Dollar, or $1.00... it just says "One". The obverse does have the denom spelled out as One Dollar.

I looked at the Platinum Collection tokens and this one does not seem to be there either.